uberfan
megafan
cheeringly
hearteningly
hyperenthusiastic
glowing
superfan
cheerleader
ultraenthusiastic
ecstatically
superenthusiastic
rhapsodically
geeked
applauder
hyperexcited
rapturously
clapper
bright as a button
excited
superexcited
cheering
fullhanded
wild
gung ho
evangelical
furor
cheerable
upbeatly
enthuse
like a dog with two tails
thrillful
hyperexcitement
geed up
with one's head held high
exciter
kilig
excitedly
superenthused
fall over oneself
applaudingly
exuberantly
hooray
effervescent
fan cast
full of beans
ovation
two-fisted
elate
standing ovation
crazy